DTC P1076 CAC Inlet Temperature Sensor Circuit Low (4JJ3 with DPD)

1. DTC P1076 description

Charge air cooler temperature sensor 1 is installed on the inlet side of the intercooler. Charge air cooler temperature sensor 1 is a variable resistor and measures the temperature of the air flowing into the intercooler. This sensor has a signal circuit and a low reference circuit. The ECM supplies 5 V to the signal circuit and grounds to the low reference circuit. The charge air cooler temperature sensor 1 resistance is high at low temperatures. As the air temperature rises, the sensor resistance decreases. The ECM detects a high voltage when the sensor resistance is high. The ECM detects a low voltage when the sensor resistance is low. If the ECM detects an excessively low signal voltage, the DTC is set.

2. Condition for setting DTC P1076

Condition for running the DTC

The battery voltage is 10 to 16 V.
The ignition switch is ON.
The engine is running.
The fuel injection quantity is 250 mm3/st or less.

DTCs P060B and P06D2 are not set.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P060B Internal Control Module A/D Processing Performance".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P06D2 Sensor Reference Voltage 5 Circuit".

Condition for setting the DTC

The ECM detects that the charge air cooler temperature sensor 1 signal voltage is 0.32 V or less for 6 seconds.

3. Action taken when DTC P1076 sets

The ECM illuminates the SVS indicator light. Refer to Action taken when DTC sets - Type C.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".

The ECM assumes a default charge air cooler temperature sensor 1 value.

4. Condition for clearing DTC P1076

Refer to Condition for clearing the SVS indicator light/DTC - Type C.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".